No, it's the bad doctor's hand, after Catherine killed him she saved a piece for Zoé since he had been cruel with her too, and she hid what she didn't eat right away in the showers' changing room. Wow, my comic is more complicated than I thought!

Wait, we use sticks to poke things, we don't poke sticks! Though I suppose it may be a bad idea to poke with a boomstick as mud can get in them and that, sir, is bad, so I guess poking a boomstick as an alternative is acceptable...